Cisco Catalyst 8300 Series Edge Platforms Configuration Guide

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Networking
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Configuration Guide

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IP Multicast: PIM Configuration Guide, Cisco IOS XE Bengaluru 17.4.x
| Cisco Catalyst 8000 Edge Platforms
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CONTENTS
Read Me First 1
CHAPTER 1
IP Multicast Technology Overview 3
CHAPTER 2
Finding Feature Information 3
Information About IP Multicast Technology 3
Role of IP Multicast in Information Delivery 3
Multicast Group Transmission Scheme 4
IP Multicast Routing Protocols 6
IP Multicast Group Addressing 6
IP Class D Addresses 6
IP Multicast Address Scoping 7
Layer 2 Multicast Addresses 8
IP Multicast Delivery Modes 8
Any Source Multicast 8
Source Specific Multicast 9
Protocol Independent Multicast 9
PIM Dense Mode 9
PIM Sparse Mode 10
Sparse-Dense Mode 11
Bidirectional PIM 11
Multicast Group Modes 12
Bidirectional Mode 12
Sparse Mode 12
Dense Mode 12
Rendezvous Points 13
Auto-RP 13
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Sparse-Dense Mode for Auto-RP 14
Bootstrap Router 14
Multicast Source Discovery Protocol 14
Anycast RP 15
Multicast Forwarding 16
Multicast Distribution Source Tree 16
Multicast Distribution Shared Tree 17
Source Tree Advantage 17
Shared Tree Advantage 18
Reverse Path Forwarding 18
RPF Check 18
PIM Dense Mode Fallback 19
Guidelines for Choosing a PIM Mode 21
Where to Go Next 21
Additional References 21
Feature Information for IP Multicast Technology Overview 22
Glossary 22
Configuring Basic IP Multicast 25
CHAPTER 3
Finding Feature Information 25
Prerequisites for Configuring Basic IP Multicast 25
Information About Configuring Basic IP Multicast 26
Auto-RP Overview 26
The Role of Auto-RP in a PIM Network 26
IP Multicast Boundary 26
Benefits of Auto-RP in a PIM Network 27
Anycast RP Overview 27
BSR Overview 27
BSR Election and Functionality 27
BSR Border Interface 28
Static RP Overview 28
SSM Overview 28
SSM Components 29
How SSM Differs from Internet Standard Multicast 29
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SSM Operations 29
IGMPv3 Host Signaling 30
Benefits of Source Specific Multicast 30
Bidir-PIM Overview 31
Multicast Group Modes 31
Bidirectional Shared Tree 32
DF Election 33
Bidirectional Group Tree Building 33
Packet Forwarding 34
Benefits of Bidirectional PIM 34
How to Configure Basic IP Multicast 34
Configuring Sparse Mode with Auto-RP 34
What to Do Next 39
Configuring Sparse Mode with Anycast RP 39
What to Do Next 41
Configuring Sparse Mode with a Bootstrap Router 41
What to Do Next 46
Configuring Sparse Mode with a Single Static RP(CLI) 46
What to Do Next 48
Configuring Source Specific Multicast 48
What to Do Next 50
Configuring Bidirectional PIM 50
Configuration Examples for Basic IP Multicast 52
Example: Sparse Mode with Auto-RP 52
Sparse Mode with Anycast RP Example 52
Sparse Mode with Bootstrap Router Example 54
BSR and RFC 2362 Interoperable Candidate RP Example 54
Example: Sparse Mode with a Single Static RP 55
SSM with IGMPv3 Example 55
SSM Filtering Example 56
Bidir-PIM Example 56
Additional References 57
Feature Information for Configuring Basic IP Multicast in IPv4 Networks 58
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Configuring Basic IP Multicast in IPv6 Networks 59
CHAPTER 4
Finding Feature Information 59
Prerequisites for Configuring Basic IP Multicast 59
Information About Configuring Basic IP Multicast in IPv6 Networks 60
IPv6 Multicast 60
IPv6 Multicast Overview 60
IPv6 Multicast Addressing 60
IPv6 Multicast Groups 62
Scoped Address Architecture 62
MRIB 63
IPv6 Multicast Process Switching and Fast Switching 63
IPv6 Anycast RP Solution 64
PIMv6 Anycast RP Solution Overview 64
PIMv6 Anycast RP Normal Operation 64
PIMv6 Anycast RP Failover 65
IPv6 BSR 66
IPv6 BSR 66
IPv6 BSR: Configure RP Mapping 66
IPv6 BSR: Scoped Zone Support 66
IPv6 Multicast: RPF Flooding of BSR Packets 67
IPv6 Multicast Groups 67
IPv6 Multicast Address Group Range Support 67
How to Configure Basic IP Multicast in IPv6 Networks 68
Enabling IPv6 Multicast Routing 68
Disabling the Device from Receiving Unauthenticated Multicast Traffic 68
Troubleshooting IPv6 Multicast 69
Configuring PIMv6 Anycast RP 71
Configuring a BSR and Verifying BSR Information 74
Sending PIM RP Advertisements to the BSR 75
Configuring BSR for Use Within Scoped Zones 76
Configuring BSR Devices to Announce Scope-to-RP Mappings 77
Configuration Examples for Configuring IP Multicast Basic in IPv6 Networks 78
Example: Enabling IPv6 Multicast Routing 78
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Examples: Disabling IPv6 Multicast Address Group Range Support 78
Example: Verifying IPv6 MRIB Information 79
Example: Configuring PIMv6 Anycast RP 79
Example: Configuring a BSR 80
Additional References 80
Feature Information for Configuring Basic IP Multicast in IPv6 Networks 81
Using MSDP to Interconnect Multiple PIM-SM Domains 85
CHAPTER 5
Finding Feature Information 85
85
Information About Using MSDP to Interconnect Multiple PIM-SM Domains 85
Benefits of Using MSDP to Interconnect Multiple PIM-SM Domains 85
Use of MSDP to Interconnect Multiple PIM-SM Domains 86
MSDP Message Types 88
SA Messages 88
SA Request Messages 89
SA Response Messages 89
Keepalive Messages 89
SA Message Origination Receipt and Processing 89
SA Message Origination 89
SA Message Receipt 89
SA Message Processing 92
MSDP Peers 92
MSDP MD5 Password Authentication 92
How MSDP MD5 Password Authentication Works 93
Benefits of MSDP MD5 Password Authentication 93
SA Message Limits 93
MSDP Keepalive and Hold-Time Intervals 93
MSDP Connection-Retry Interval 94
MSDP Compliance with IETF RFC 3618 94
Benefits of MSDP Compliance with RFC 3618 94
Default MSDP Peers 95
MSDP Mesh Groups 96
Benefits of MSDP Mesh Groups 96
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SA Origination Filters 97
Use of Outgoing Filter Lists in MSDP 97
Use of Incoming Filter Lists in MSDP 98
TTL Thresholds in MSDP 99
SA Request Messages 99
SA Request Filters 99
MSDP MIB 100
How to Use MSDP to Interconnect Multiple PIM-SM Domains 100
Configuring an MSDP Peer 100
Shutting Down an MSDP Peer 101
Configuring MSDP MD5 Password Authentication Between MSDP Peers 102
Troubleshooting Tips 103
Preventing DoS Attacks by Limiting the Number of SA Messages Allowed in the SA Cache from
Specified MSDP Peers 104
Adjusting the MSDP Keepalive and Hold-Time Intervals 105
Adjusting the MSDP Connection-Retry Interval 106
Configuring MSDP Compliance with IETF RFC 3618 107
Configuring a Default MSDP Peer 108
Configuring an MSDP Mesh Group 109
Controlling SA Messages Originated by an RP for Local Sources 110
Controlling the Forwarding of SA Messages to MSDP Peers Using Outgoing Filter Lists 111
Controlling the Receipt of SA Messages from MSDP Peers Using Incoming Filter Lists 112
Using TTL Thresholds to Limit the Multicast Data Sent in SA Messages 113
Requesting Source Information from MSDP Peers 114
Controlling the Response to Outgoing SA Request Messages from MSDP Peers Using SA Request
Filters 115
Including a Bordering PIM Dense Mode Region in MSDP 116
Configuring an Originating Address Other Than the RP Address 117
Monitoring MSDP 118
Clearing MSDP Connections Statistics and SA Cache Entries 120
Enabling SNMP Monitoring of MSDP 121
Troubleshooting Tips 122
Configuration Examples for Using MSDP to Interconnect Multiple PIM-SM Domains 122
Example: Configuring an MSDP Peer 122
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Example: Configuring MSDP MD5 Password Authentication 123
Configuring MSDP Compliance with IETF RFC 3618 Example 123
Configuring a Default MSDP Peer Example 124
Example: Configuring MSDP Mesh Groups 125
Additional References 125
Feature Information for Using MSDP to Interconnect Multiple PIM-SM Domains 126
PIM Allow RP 129
CHAPTER 6
Finding Feature Information 129
Restrictions for PIM Allow RP 129
Information About PIM Allow RP 130
Rendezvous Points 130
PIM Allow RP 130
How to Configure PIM Allow RP 131
Configuring RPs for PIM-SM 131
Enabling PIM Allow RP 133
Displaying Information About PIM-SM and RPs 134
Configuration Examples for PIM Allow RP 135
Example: IPv4 PIM Allow RP 135
Example: IPv6 PIM Allow RP 136
Additional References for PIM Allow RP 138
Feature Information for PIM Allow RP 138
Configuring Source Specific Multicast 139
CHAPTER 7
Finding Feature Information 139
Restrictions for Source Specific Multicast 139
Information About Source Specific Multicast 141
SSM Overview 141
SSM Components 141
How SSM Differs from Internet Standard Multicast 141
SSM Operations 142
IGMPv3 Host Signaling 143
Benefits of 143
IGMP v3lite Host Signalling 144
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URD Host Signalling 145
How to Configure Source Specific Multicast 147
Configuring SSM 147
Configuration Examples of Source Specific Multicast 148
SSM with IGMPv3 Example 148
SSM with IGMP v3lite and URD Example 148
SSM Filtering Example 148
Additional References 149
Feature Information for Source Specific Multicast 150
Tunneling to Connect Non-IP Multicast Areas 153
CHAPTER 8
Finding Feature Information 153
Prerequisites for Tunneling to Connect Non-IP Multicast Areas 153
Information About Tunneling to Connect Non-IP Multicast Areas 153
Benefits of Tunneling to Connect Non-IP Multicast Areas 153
IP Multicast Static Route 154
How to Connect Non-IP Multicast Areas 154
Configuring a Tunnel to Connect Non-IP Multicast Areas 154
Configuration Examples for Tunneling to Connect Non-IP Multicast Areas 157
Tunneling to Connect Non-IP Multicast Areas Example 157
Additional References 160
Feature Information for Tunneling to Connect Non-IP Multicast Areas 161
Automatic Multicast Tunneling 163
CHAPTER 9
Finding Feature Information 163
Restrictions for Automatic Multicast Tunneling 163
Information About Automatic Multicast Tunneling 164
Overview 164
Automatic Multicast Tunneling Message Exchanges 164
AMT Tunnel and Traffic Types 165
Advantages of Automatic Multicast Tunneling 165
Prerequisites for AMT 165
Configuration Recommendations for AMT 166
How to Configure Automatic Multicast Tunneling 166
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Enabling and Configuring Automatic Multicast Tunneling on a Relay 166
Enabling and Configuring Automatic Multicast Tunneling on Gateway 168
Displaying and Verifying AMT Configuration 171
Displaying and Verifying AMT Relay Configuration 173
Displaying and Verifying AMT Gateway Configuration 176
Configuration Examples for Automatic Multicast Tunneling 178
Example: AMT Relay Configuration 178
Example: AMT Gateway Configuration 178
Additional References for Automatic Multicast Tunneling 179
Feature Information for Automatic Multicast Tunneling 179
BFD Support for Multicast (PIM) 181
CHAPTER 10
Restrictions for BFD Support for Multicast (PIM) 181
Information About BFD Support for Multicast (PIM) 181
PIM BFD 181
How to Configure BFD Support for Multicast (PIM) 182
Enabling BFD PIM on an Interface 182
Configuration Examples for BFD Support for Multicast (PIM) 183
Additional References for BFD Support for Multicast (PIM) 183
Feature Information for BFD Support for Multicast (PIM) 184
HSRP Aware PIM 185
CHAPTER 11
Finding Feature Information 185
Restrictions for HSRP Aware PIM 185
Information About HSRP Aware PIM 186
HSRP 186
HSRP Aware PIM 186
How to Configure HSRP Aware PIM 187
Configuring an HSRP Group on an Interface 187
Configuring PIM Redundancy 189
Configuration Examples for HSRP Aware PIM 190
Example: Configuring an HSRP Group on an Interface 190
Example: Configuring PIM Redundancy 190
Additional References for HSRP Aware PIM 191
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Feature Information for HSRP Aware PIM 191
VRRP Aware PIM 193
CHAPTER 12
Finding Feature Information 193
Restrictions for VRRP Aware PIM 193
Information About VRRP Aware PIM 194
Overview of VRRP Aware PIM 194
How to Configure VRRP Aware PIM 194
Configuring VRRP Aware PIM 194
Configuration Examples for VRRP Aware PIM 196
Example: VRRP Aware PIM 196
Additional References for VRRP Aware PIM 197
Feature Information for VRRP Aware PIM 197
Verifying IP Multicast Operation 199
CHAPTER 13
Finding Feature Information 199
Prerequisites for Verifying IP Multicast Operation 199
Restrictions for Verifying IP Multicast Operation 200
Information About Verifying IP Multicast Operation 200
Guidelines for Verifying IP Multicast Operation in a PIM-SM and PIM-SSM Network Environment
200
Common Commands Used to Verify IP Multicast Operation on the Last Hop Router for PIM-SM
and PIM-SSM 200
Common Commands Used to Verify IP Multicast Operation on Routers Along the SPT for PIM-SM
and PIM-SSM 201
Common Commands Used to Verify IP Multicast Operation on the First Hop Router for PIM-SM
and PIM-SSM 202
How to Verify IP Multicast Operation 202
Using PIM-Enabled Routers to Test IP Multicast Reachability 202
Configuring Routers to Respond to Multicast Pings 202
Pinging Routers Configured to Respond to Multicast Pings 203
Verifying IP Multicast Operation in a PIM-SM or a PIM-SSM Network 203
Verifying IP Multicast Operation on the Last Hop Router 204
Verifying IP Multicast on Routers Along the SPT 207
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Verifying IP Multicast on the First Hop Router 209
Configuration Examples for Verifying IP Multicast Operation 210
Verifying IP Multicast Operation in a PIM-SM or PIM-SSM Network Example 210
Verifying IP Multicast on the Last Hop Router Example 211
Verifying IP Multicast on Routers Along the SPT Example 214
Verifying IP Multicast on the First Hop Router Example 214
Additional References 215
Feature Information for Verifying IP Multicast Operation 216
Monitoring and Maintaining IP Multicast 217
CHAPTER 14
Finding Feature Information 218
Prerequisites for Monitoring and Maintaining IP Multicast 218
Information About Monitoring and Maintaining IP Multicast 218
IP Multicast Heartbeat 218
Session Announcement Protocol (SAP) 219
PIM MIB Extensions for SNMP Traps for IP Multicast 219
Benefits of PIM MIB Extensions 220
How to Monitor and Maintain IP Multicast 220
Displaying Multicast Peers Packet Rates and Loss Information and Tracing a Path 220
Displaying IP Multicast System and Network Statistics 221
Clearing IP Multicast Routing Table or Caches 222
Monitoring IP Multicast Delivery Using IP Multicast Heartbeat 223
Advertising Multicast Multimedia Sessions Using SAP Listener 224
Disabling Fast Switching of IP Multicast 226
Enabling PIM MIB Extensions for IP Multicast 227
Configuration Examples for Monitoring and Maintaining IP Multicast 228
Displaying IP Multicast System and Network Statistics Example 228
Monitoring IP Multicast Delivery Using IP Multicast Heartbeat Example 229
Advertising Multicast Multimedia Sessions Using SAP Listener Example 229
Displaying IP Multicast System and Network Statistics Example 230
Enabling PIM MIB Extensions for IP Multicast Example 232
Additional References 232
Feature Information for Monitoring and Maintaining IP Multicast 233
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Multicast User Authentication and Profile Support 235
CHAPTER 15
Finding Feature Information 235
Restrictions for Multicast User Authentication and Profile Support 235
Information About Multicast User Authentication and Profile Support 236
IPv6 Multicast User Authentication and Profile Support 236
How to Configure Multicast User Authentication and Profile Support 236
Enabling AAA Access Control for IPv6 Multicast 236
Specifying Method Lists and Enabling Multicast Accounting 237
Disabling the Device from Receiving Unauthenticated Multicast Traffic 238
Configuration Examples for Multicast User Authentication and Profile Support 239
Example: Enabling AAA Access Control, Specifying Method Lists, and Enabling Multicast Accounting
for IPv6 239
Additional References for IPv6 Services: AAAA DNS Lookups 239
Feature Information for Multicast User Authentication and Profile Support 240
IPv6 Multicast: Bootstrap Router 243
CHAPTER 16
Finding Feature Information 243
Information About IPv6 Multicast: Bootstrap Router 243
IPv6 BSR 243
IPv6 BSR: Configure RP Mapping 244
IPv6 BSR: Scoped Zone Support 244
IPv6 Multicast: RPF Flooding of BSR Packets 245
How to Configure IPv6 Multicast: Bootstrap Router 245
Configuring a BSR and Verifying BSR Information 245
Sending PIM RP Advertisements to the BSR 246
Configuring BSR for Use Within Scoped Zones 247
Configuring BSR Devices to Announce Scope-to-RP Mappings 248
Configuration Examples for IPv6 Multicast: Bootstrap Router 249
Example: Configuring a BSR 249
Additional References 249
Feature Information for IPv6 Multicast: Bootstrap Router 250
IPv6 Multicast: PIM Sparse Mode 253
CHAPTER 17
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Finding Feature Information 253
Information About IPv6 Multicast PIM Sparse Mode 253
Protocol Independent Multicast 253
PIM-Sparse Mode 254
How to Configure IPv6 Multicast PIM Sparse Mode 258
Enabling IPv6 Multicast Routing 258
Configuring PIM-SM and Displaying PIM-SM Information for a Group Range 258
Configuring PIM Options 260
Resetting the PIM Traffic Counters 262
Turning Off IPv6 PIM on a Specified Interface 262
Configuration Examples for IPv6 Multicast PIM Sparse Mode 263
Example: Enabling IPv6 Multicast Routing 263
Example: Configuring PIM 263
Example: Displaying IPv6 PIM Topology Information 264
Example: Displaying PIM-SM Information for a Group Range 264
Example: Configuring PIM Options 265
Example: Displaying Information About PIM Traffic 265
Additional References 266
Feature Information for IPv6 Multicast PIM Sparse Mode 267
IPv6 Multicast: Static Multicast Routing for IPv6 269
CHAPTER 18
Finding Feature Information 269
Information About IPv6 Static Mroutes 269
How to Configure IPv6 Static Multicast Routes 270
Configuring Static Mroutes 270
Configuration Examples for IPv6 Static Multicast Routes 271
Example: Configuring Static Mroutes 271
Additional References 272
Feature Information for IPv6 Multicast: Static Multicast Routing for IPv6 273
IPv6 Multicast: PIM Source-Specific Multicast 275
CHAPTER 19
Finding Feature Information 275
Prerequisites for IPv6 Multicast: PIM Source-Specific Multicast 275
Information About IPv6 Multicast: PIM Source-Specific Multicast 276
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IPv6 Multicast Routing Implementation 276
Protocol Independent Multicast 276
PIM-Source Specific Multicast 277
How to Configure IPv6 Multicast: PIM Source-Specific Multicast 279
Configuring PIM Options 279
Resetting the PIM Traffic Counters 281
Clearing the PIM Topology Table to Reset the MRIB Connection 281
Configuration Examples for IPv6 Multicast: PIM Source-Specific Multicast 283
Example: Displaying IPv6 PIM Topology Information 283
Example: Configuring Join/Prune Aggregation 284
Example: Displaying Information About PIM Traffic 284
Additional References 284
Feature Information for IPv6 Multicast: PIM Source-Specific Multicast 285
IPv6 Source Specific Multicast Mapping 287
CHAPTER 20
Finding Feature Information 287
Information About IPv6 Source Specific Multicast Mapping 287
How to Configure IPv6 Source Specific Multicast Mapping 288
Configuring IPv6 SSM 288
Configuration Examples for IPv6 Source Specific Multicast Mapping 289
Example: IPv6 SSM Mapping 289
Additional References 290
Feature Information for IPv6 Source Specific Multicast Mapping 291
IPv6 Multicast: Explicit Tracking of Receivers 293
CHAPTER 21
Finding Feature Information 293
Information About IPv6 Multicast Explicit Tracking of Receivers 293
Explicit Tracking of Receivers 293
How to Configure IPv6 Multicast Explicit Tracking of Receivers 293
Configuring Explicit Tracking of Receivers to Track Host Behavior 293
Configuration Examples for IPv6 Multicast Explicit Tracking of Receivers 294
Example: Configuring Explicit Tracking of Receivers 294
Additional References 295
Feature Information for IPv6 Multicast: Explicit Tracking of Receivers 296
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IPv6 Bidirectional PIM 297
CHAPTER 22
Finding Feature Information 297
Restrictions for IPv6 Bidirectional PIM 297
Information About IPv6 Bidirectional PIM 297
Bidirectional PIM 297
How to Configure IPv6 Bidirectional PIM 298
Configuring Bidirectional PIM and Displaying Bidirectional PIM Information 298
Configuration Examples for IPv6 Bidirectional PIM 299
Example: Configuring Bidirectional PIM and Displaying Bidirectional PIM Information 299
Additional References 300
Feature Information for IPv6 Bidirectional PIM 301
IPv6 PIM Passive Mode 303
CHAPTER 23
Finding Feature Information 303
Information About IPv6 PIM Passive Mode 303
How to Configure IPv6 PIM Passive Mode 303
Additional References 305
Feature Information for IPv6 PIM Passive 306
IPv6 Multicast: Routable Address Hello Option 307
CHAPTER 24
Finding Feature Information 307
Information About the Routable Address Hello Option 307
How to Configure IPv6 Multicast: Routable Address Hello Option 308
Configuring the Routable Address Hello Option 308
Configuration Example for the Routable Address Hello Option 309
Additional References 309
Feature Information for IPv6 Multicast: Routable Address Hello Option 310
PIMv6 Anycast RP Solution 311
CHAPTER 25
Finding Feature Information 311
Information About the PIMv6 Anycast RP Solution 311
PIMv6 Anycast RP Solution Overview 311
PIMv6 Anycast RP Normal Operation 312
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PIMv6 Anycast RP Failover 312
How to Configure the PIMv6 Anycast RP Solution 313
Configuring PIMv6 Anycast RP 313
Configuration Examples for the PIMv6 Anycast RP Solution 316
Example: Configuring PIMv6 Anycast RP 316
Additional References 317
Feature Information for PIMv6 Anycast RP Solution 317
MTR in VRF 319
CHAPTER 26
Finding Feature Information 319
Information About MTR in VRF 319
MTR in VRF Overview 319
How to Configure VRF in MTR 320
Configuring MTR in VRF 320
Configuring Examples for MTR in VRF 322
Example for MTR in VRF 322
Additional References for MTR in VRF 323
Feature Information for MTR in VRF 323
Configuring IP Multicast Over Unidirectional Links 325
CHAPTER 27
Information About IP Multicast over UDL 325
Prerquisites for Multicast Over UDL 327
Restrictions for Multicast Over UDL 327
How to Configure Multicast Over UDL 327
Verifying Multicast Over UDL Configuration 328
Verifying Multicast Over UDL Configuration 330
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CHAPTER 1
Read Me First
Important Information about Cisco IOS XE 16
Effective Cisco IOS XE Release 3.7.0E for Catalyst Switching and Cisco IOS XE Release 3.17S (for Access
and Edge Routing) the two releases evolve (merge) into a single version of converged release—the Cisco IOS
XE 16—providing one release covering the extensive range of access and edge products in the Switching and
Routing portfolio.
Feature Information
Use Cisco Feature Navigator to find information about feature support, platform support, and Cisco software
image support. An account on Cisco.com is not required.
Related References
•Cisco IOS Command References, All Releases
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IP Multicast: PIM Configuration Guide, Cisco IOS XE Bengaluru 17.4.x | Cisco Catalyst 8000 Edge Platforms
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Cisco Catalyst 8300 Series Edge Platforms Configuration Guide

Category
Networking
Type
Configuration Guide
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